Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8718467 | Method of switching optical path, and apparatus thereof | Kuniaki Tanaka, Koichi Yoshida, Kazunori KATAYAMA, Yuji Azuma, Masatoshi Shimizu | 2014-05-06 |
| 5528938 | Method and apparatus for measuring length of conduit and for diagnosing inside of conduit | Hiroaki Sano, Kinji Taguchi, Shigeru Tanaka, Tetsuro Yabuta | 1996-06-25 |
| 5505086 | Method and apparatus for measuring length of conduit and for diagnosing inside of conduit | Hiroaki Sano, Kinji Taguchi, Shigeru Tanaka, Tetsuro Yabuta | 1996-04-09 |